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This review is from: Shimano Tourney 6 Speed Mountain Bike ScrewOn Freewheel MFTZ06 (Misc.)
A good, fairly long-wearing freewheel. Have never used anything from a higher range (Deore etc.) but would say will easily go 4000 road km if conditions are only occasionally cruddy. Shifts are very quick and solid with the SRAM PC870 chain. I am now using a combination of Shimano HG40 chain and Shimano HG20 cassette, and the shifting is much more hesitant.